The chaos left by the thieves when they fled the vault with an estimated £60m haul

The hours of forensic work and inquiries have been vital in order to ensure we are able to exploit all investigative opportunities to their fullest extent and assist us in identifying those individuals responsible

Flying Squad chief Detective Superintendent Craig Turner

Officers said the vault was covered in dust and debris and the floor was strewn with numerous power tools including an angle grinder, concrete drills and crowbars.

Detectives said crucial DNA fingerprints and other evidence have been recovered.

The gang broke into the vault in London’s jewellery district either on Thursday, April 2, or early Good Friday.

Using a diamond-tipped drill, they spent hours boring three holes in the concrete wall which were just big enough together for a tiny person or a contortionist to squeeze through.

The gang, dubbed the Diamond Geezers, opened 72 safety deposit boxes over the Easter weekend and escaped with diamonds, gold, cash and other valuables reckoned to be worth around £35million.

Officers said they found 400 items, including power tools and crowbars, in the vault. They are still trying to contact six owners of opened boxes.

Det Supt Craig Turner, head of the Flying Squad, said police had now completed their vital forensic work.

He said: “The hours of forensic work and inquiries have been vital in order to ensure we are able to exploit all investigative opportunities to their fullest extent and assist us in identifying those individuals responsible.

“We appreciate this situation has been frustrating for those affected by this crime and thank those individuals for their patience.

“Those safety deposit boxes not opened by the thieves during the burglary have been left secured.”

PA

Scotland Yard have released a graphic illustrating how they believe the gang entered the building

At least one of the gang is thought to have hidden in the building and let others in. No one has been arrested.

CCTV captured the gang leaving around 8am on Easter Saturday. They returned around 10pm and emerged 6.30am on Easter Sunday.

An investigation is continuing into why police ignored an intruder alarm on Good Friday.

Scotland Yard said it was "too early to say" if the handling of the call would have impacted the case.

The new pictures will raise questions over whether the same gang responsible for London jewellery raid may have conducted a similar theft from a bank two years ago.

PA

Metal bars on a security door into the vault have been cut and pulled aside

In January 2013 a group drilled through 80cm of reinforced concrete to break into the vault at the Volksbank in Steglitz, Berlin.

The gang opened 294 safety deposit boxes, taking diamonds, gold and silver worth more than €10 million (£8.3 million).

Along with the images, Scotland Yard also released a graphic illustrating how they believe the gang twice entered the building and got into the vault between Thursday, April 2 at 9.20pm and Friday, April 3 at around 8.05am; and Saturday, April 4 at approximately 10.17pm and Sunday, April 5 at around 6.30pm.

Officers said there was no sign of a forced entry and the thieves disabled the communal lift on the second floor and then used the life shaft to climb down into the basement where the safety deposit business was based.

They then forced open the shutter doors into the basement and bored holes through the vault wall.

The force have recorded, packaged and recovered around 400 exhibits, including items for DNA profiling, fingerprints and other evidence.

Digital forensics have also recovered thousands of hours of CCTV footage, while specialist forensic photographers have also mapped out the crime scene and utilised digital techniques to record the inside of the premises.